CN110769507B - Method, device and communication equipment for transmitting data of secondary cell - Google Patents
Method, device and communication equipment for transmitting data of secondary cell Download PDFInfo
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- CN110769507B CN110769507B CN201810844832.XA CN201810844832A CN110769507B CN 110769507 B CN110769507 B CN 110769507B CN 201810844832 A CN201810844832 A CN 201810844832A CN 110769507 B CN110769507 B CN 110769507B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0446—Resources in time domain, e.g. slots or frames
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention provides a method and a device for transmitting data of a secondary cell, which are applied to a terminal, a method and a device for transmitting data of a secondary cell, which are applied to a base station, and communication equipment. The method for transmitting the data of the secondary cell, which is applied to the terminal, comprises the following steps: receiving an offset indication sent by a base station, and receiving resource allocation information sent by the base station on a main cell in a transmission time interval of a cell activation signaling; and in the transmission time interval, determining the preset time-frequency resource position of the auxiliary cell according to the offset indication and the resource allocation information, and receiving the user data sent by the base station at the preset time-frequency resource position. In the carrier aggregation scene in which the downlink control information is used to activate the secondary cell, the technical scheme of the invention can optimize the data receiving mode in the carrier aggregation scene, so that the terminal can successfully utilize the secondary cell to receive data at the current transmission time interval, and the data transmission delay in the carrier aggregation scene is reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting data in a secondary cell, which are applied to a terminal, a method and an apparatus for transmitting data in a secondary cell, which are applied to a base station, and a communication device.
Background
Currently, development work of a 5 th generation mobile communication system (5G) is actively underway. According to future application requirements, the 5G system needs to support multiple service scenarios, wherein Low-Latency and high-reliability (URLLC) communication scenarios such as unmanned driving, industrial automation, and the like are receiving wide attention. Generally, URLLC data has very high burstiness and high requirements on time delay, and in addition, such data has very strict requirements on transmission reliability.
In the new standards (release.16) clause, Carrier Aggregation (CA) technology will be applied to transmission of URLLC data, and CA can be used for repeated transmission or high-speed transmission of URLLC data. When data is repeatedly transmitted in a CA scenario, a base station may transmit the same data on multiple cells at the same time, further expand frequency domain transmit diversity gain (the larger the frequency domain distance, the more obvious the frequency domain transmit diversity gain), and improve reliability of data transmission. Different carriers can also be used for sending different data, and further more data can be transmitted in the shortest time to meet the delay requirement of URLLC data transmission. However, in a CA scenario, the base station cannot make multiple cells in an active state for a long time, which may cause the terminal to scan the multiple cells for a long time and increase battery consumption, so the cell activation scheme is indispensable, and if the current cell activation scheme is continuously adopted, that is, it is difficult to effectively support a very bursty and delay-sensitive URLLC service through Radio Resource Control (RRC) signaling, because the configuration and update period of the RRC signaling is usually long, when a certain number of cells need to be used for URLLC data transmission, it is difficult to activate the secondary cell through the RRC signaling to meet the timeliness. A feasible method is to send a cell activation signal by using Downlink Control Information (DCI), as shown in fig. 1, a terminal immediately activates one or more secondary cells after receiving an activation signal in a Control region of a primary cell, but at this time, due to the existence of a Control signal receiving processing delay and a cell activation delay, the terminal cannot read the Control region in other cells (secondary cell 1 and secondary cell 2) of the current TTI and receive user data of the secondary cell by using resource allocation Information of the Control region. In contrast, as shown in fig. 2, the resource allocation information of the secondary cell may be sent on the primary cell (cross-carrier scheduling), but in order to reduce the size of the DCI, the same resource allocation information needs to be used to indicate resources allocated to the terminal on multiple cells, for example, if the resource allocation information on the primary cell is from symbol 3 to symbol 4 in the time domain, and from RB (resource block) 2 to RB 4 in the frequency domain, the terminal will receive data on corresponding resources (from symbol 3 to symbol 4 in the time domain, and from RB 2 to RB 4 in the frequency domain) of all cells (primary cell, secondary cell 1, and secondary cell 2). However, the processing capability of each terminal is not consistent, as shown in fig. 3, the secondary cell 1 and the secondary cell 2 may not be activated yet on the symbol to be received, and then the terminal still cannot successfully receive the resources on the secondary cell 1 and the secondary cell 2 in the current TTI, and if the terminal waits for the next TTI and then receives data, the data reception delay is caused, and the URLLC delay requirement cannot be well satisfied.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, an aspect of the present invention is to propose a method for secondary cell data transmission applied to a terminal.
Another aspect of the present invention is to propose a method for secondary cell data transmission applied to a base station.
Still another aspect of the present invention is to provide an apparatus for secondary cell data transmission applied to a terminal.
Still another aspect of the present invention is to provide an apparatus for secondary cell data transmission applied to a base station.
Yet another aspect of the present invention is to provide a communication device.
In view of the above, according to an aspect of the present invention, a method for transmitting data in a secondary cell is provided, where the method is applied to a terminal, and the method includes: receiving an offset indication sent by a base station, and receiving resource allocation information sent by the base station on a main cell in a transmission time interval of a cell activation signaling; and in the transmission time interval, determining the preset time-frequency resource position of the auxiliary cell according to the offset indication and the resource allocation information, and receiving the user data sent by the base station at the preset time-frequency resource position.
In the method for transmitting the data of the secondary cell, the terminal receives the offset indication sent by the base station and receives the resource allocation information sent by the base station on the primary cell in the TTI (Transmission Time Interval) of the cell activation signaling. Further, the terminal determines a predetermined time-frequency resource position of the user data sent by the base station on the secondary cell according to the offset indication and the resource allocation information, and receives the user data on the predetermined time-frequency resource position. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data receiving mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
The method for transmitting data in a secondary cell according to the present invention may further have the following technical features:
in the foregoing technical solution, preferably, the offset indicator is used to indicate a time domain offset of the predetermined time frequency resource location with respect to a time frequency resource location on the primary cell indicated by the resource allocation information.
In the technical solution, a time domain offset of a predetermined time Frequency resource position relative to a time Frequency resource position on a primary cell indicated by resource allocation information is determined according to an offset indication, that is, an OFDM (Orthogonal Frequency Division Multiplexing) symbol number (that is, a time difference) of a difference between a time Frequency resource position on a secondary cell used for receiving user data and a time Frequency resource position on the primary cell indicated by the resource allocation information. The position of the time-frequency resource of the auxiliary cell for receiving the user data can be determined through the offset indication, so that the terminal can respectively receive the user data on the main cell and the auxiliary cell in the cell activation TTI, the data on the auxiliary cell does not need to be delayed to be received by the next TTI, and the time delay of data transmission is effectively reduced.
In any of the above technical solutions, preferably, the receiving the offset indication sent by the base station specifically includes: and receiving and demodulating downlink control information or high-level signaling sent by the base station to acquire an offset indication.
In the technical scheme, the offset indication can be carried by downlink control information or high-level signaling, so that the terminal can effectively receive the offset indication.
According to another aspect of the present invention, a method for secondary cell data transmission is provided, which is applied to a base station, and includes: configuring an offset instruction for the terminal, and sending the offset instruction to the terminal; and in the transmission time interval of the cell activation signaling, sending user data to the terminal by using a preset time-frequency resource of the auxiliary cell, wherein the time domain offset of the position of the preset time-frequency resource relative to the time-frequency resource position on the main cell indicated by the resource allocation information is determined by the offset indication.
In the method for transmitting the data of the auxiliary cell, the base station configures an offset instruction for the terminal and sends the offset instruction to the terminal, wherein the offset instruction is used for indicating the time domain offset of the position of a time-frequency resource (a preset time-frequency resource) for sending user data by the auxiliary cell relative to the time-frequency resource position on the main cell indicated by the resource allocation information, namely the OFDM symbol number (namely time difference) of the difference between the time-frequency resource position for sending the user data on the auxiliary cell and the time-frequency resource position on the main cell indicated by the resource allocation information. Further, in the TTI in which the cell activation signaling is located, the user data is sent to the terminal by using the predetermined time-frequency resource of the secondary cell. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data transmission mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
The method for transmitting data in the secondary cell according to the present invention may further have the following technical features:
in the foregoing technical solution, preferably, configuring an offset indication for a terminal specifically includes: and configuring the offset indication for the terminal according to the processing capability of the terminal.
In the technical scheme, the base station correspondingly configures the offset indication for the terminal according to the processing capability (such as data processing capability) reported by the terminal, so that the offset indication has higher pertinence, and the terminal is ensured to successfully receive the user data on the auxiliary cell in the current TTI.
In any of the above technical solutions, preferably, the sending the offset indication to the terminal specifically includes: and carrying the offset indication by using the downlink control information or the high-level signaling, and sending the downlink control information or the high-level signaling to the terminal.
In the technical scheme, the offset indication can be carried by downlink control information or high-level signaling, so that the terminal can effectively receive the offset indication.
According to another aspect of the present invention, an apparatus for secondary cell data transmission is provided, which is applied to a terminal, and includes: a receiving module, configured to receive an offset indication sent by a base station, and receive resource allocation information sent by the base station on a primary cell within a transmission time interval in which a cell activation signaling is located; a position determining module, configured to determine, within a transmission time interval, a predetermined time-frequency resource position of the secondary cell according to the offset indication and the resource allocation information; and the receiving module is further used for receiving the user data sent by the base station at the predetermined time-frequency resource position.
The terminal receives the offset indication sent by the base station and receives the resource allocation information sent by the base station on the primary cell in the TTI where the cell activation signaling is located. Further, the terminal determines a predetermined time-frequency resource position of the user data sent by the base station on the secondary cell according to the offset indication and the resource allocation information, and receives the user data on the predetermined time-frequency resource position. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data receiving mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
The apparatus for transmitting data in a secondary cell according to the present invention may further have the following technical features:
in the foregoing technical solution, preferably, the offset indicator is used to indicate a time domain offset of the predetermined time frequency resource location with respect to a time frequency resource location on the primary cell indicated by the resource allocation information.
In the technical scheme, a time domain offset of a predetermined time frequency resource position relative to a time frequency resource position on a main cell indicated by resource allocation information is determined according to an offset indication, that is, the number of OFDM symbols (that is, a time difference) of a difference between the time frequency resource position on an auxiliary cell for receiving user data and the time frequency resource position on the main cell indicated by the resource allocation information. The position of the time-frequency resource of the auxiliary cell for receiving the user data can be determined through the offset indication, so that the terminal can respectively receive the user data on the main cell and the auxiliary cell in the cell activation TTI, the data on the auxiliary cell does not need to be delayed to be received by the next TTI, and the time delay of data transmission is effectively reduced.
In any of the above technical solutions, preferably, the receiving module is specifically configured to receive and demodulate downlink control information or a high-level signaling sent by the base station, and acquire the offset indication.
In the technical scheme, the offset indication can be carried by downlink control information or high-level signaling, so that the terminal can effectively receive the offset indication.
According to another aspect of the present invention, an apparatus for secondary cell data transmission is provided, which is applied to a base station, and includes: a configuration module for configuring an offset indication for a terminal; a sending module, configured to send the offset indication to the terminal; and in the transmission time interval in which the cell activation signaling is positioned, sending user data to the terminal by using the preset time-frequency resource of the auxiliary cell, wherein the time domain offset of the position of the preset time-frequency resource relative to the time-frequency resource position on the main cell indicated by the resource allocation information is determined by the offset indication.
In the device for transmitting data in the secondary cell provided by the invention, the base station configures an offset instruction for the terminal and sends the offset instruction to the terminal, wherein the offset instruction is used for indicating the time domain offset of the position of a time-frequency resource (a preset time-frequency resource) for sending user data in the secondary cell relative to the time-frequency resource position on the primary cell indicated by the resource allocation information, namely the OFDM symbol number (namely time difference) of the difference between the time-frequency resource position for sending the user data in the secondary cell and the time-frequency resource position on the primary cell indicated by the resource allocation information. Further, in the TTI in which the cell activation signaling is located, the user data is sent to the terminal by using the predetermined time-frequency resource of the secondary cell. In the CA scene of activating the auxiliary cell by using the DCI, the technical scheme of the invention can optimize the data transmission mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in the URLLC service transmission aspect, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
The apparatus for transmitting data in a secondary cell according to the present invention may further have the following technical features:
in the foregoing technical solution, preferably, the configuration module is specifically configured to configure the offset indication for the terminal according to a processing capability of the terminal.
In the technical scheme, the base station correspondingly configures the offset indication for the terminal according to the processing capability (such as data processing capability) reported by the terminal, so that the offset indication has higher pertinence, and the terminal is ensured to successfully receive the user data on the auxiliary cell in the current TTI.
In any of the foregoing technical solutions, preferably, the sending module is specifically configured to utilize the downlink control information or the higher layer signaling to carry the offset indication, and send the downlink control information or the higher layer signaling to the terminal.
In the technical scheme, the offset indication can be carried by downlink control information or high-level signaling, so that the terminal can effectively receive the offset indication.
According to another aspect of the present invention, a communication device is provided, which includes the apparatus for secondary cell data transmission in any of the above technical solutions; or the device for transmitting the data of the secondary cell in any technical scheme.
The communication device provided by the present invention includes the apparatus for transmitting data in the secondary cell according to any of the above technical solutions, or the apparatus for transmitting data in the secondary cell according to any of the above technical solutions, and can achieve all the advantageous technical effects of the apparatus for transmitting data in the secondary cell according to any of the above technical solutions, or the apparatus for transmitting data in the secondary cell according to any of the above technical solutions.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic diagram showing data reception of the related art;
fig. 2 is a diagram illustrating another data reception of the related art;
fig. 3 is a diagram illustrating still another data reception of the related art;
fig. 4 is a flowchart illustrating a method for secondary cell data transmission according to an embodiment of the present invention;
fig. 5 shows a schematic diagram of secondary cell data reception of an embodiment of the invention;
fig. 6 shows a flow chart of a method for secondary cell data transmission according to another embodiment of the present invention;
fig. 7 is a flowchart illustrating a method for secondary cell data transmission according to an embodiment of the present invention;
fig. 8 shows a flow diagram of a method for secondary cell data transmission according to another embodiment of the invention;
fig. 9 shows a flow chart of a method for secondary cell data transmission according to yet another embodiment of the invention;
fig. 10 shows a schematic diagram of an apparatus for secondary cell data transmission according to an embodiment of the invention;
fig. 11 shows a schematic diagram of an apparatus for secondary cell data transmission according to an embodiment of the present invention.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited to the specific embodiments disclosed below.
Fig. 4 is a flowchart illustrating a method for transmitting data in a secondary cell according to an embodiment of the present invention. Wherein, the method comprises the following steps:
The method for transmitting the data of the secondary cell provided by the invention considers that the data receiving problem exists in the current mode of activating the secondary cell based on DCI, namely, a terminal has certain time delay after receiving and processing the DCI activated by the cell and completing the activation of the secondary cell, if the same resource allocation information on the main cell is adopted on the secondary cell, the situation that the data needs to be received but the secondary cell is still not activated can occur, therefore, an offset indication is defined so that the terminal can receive the user data on the secondary cell according to the offset indication and the resource allocation information. Specifically, the terminal receives the offset indication sent by the base station, and receives resource allocation information sent by the base station on the primary cell in a Transmission Time Interval (TTI) in which the cell activation signaling is located. Further, the terminal determines a predetermined time-frequency resource position of the user data sent by the base station on the secondary cell according to the offset indication and the resource allocation information, and receives the user data on the predetermined time-frequency resource position. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data receiving mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
Fig. 5 shows a diagram of secondary cell data reception according to an embodiment of the invention. As shown in fig. 5, the terminal determines that a difference between a time-frequency resource location for receiving user data in the secondary cell and a time-frequency resource location in the primary cell indicated by the resource allocation information is three OFDM symbols (i.e., an instant domain offset is 3). The terminal receives data on the corresponding resources (time domain 6 to 7 symbols, frequency domain 2 to 4 RBs) on secondary cell 1 and secondary cell 2.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, and a notebook computer.
Fig. 6 is a flowchart illustrating a method for secondary cell data transmission according to another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, the offset indication may be carried by downlink control information or higher layer signaling, which ensures that the terminal can effectively receive the offset indication.
In one embodiment of the present invention, preferably, the offset indicates a time domain offset for indicating a predetermined time frequency resource location relative to a time frequency resource location on the primary cell indicated by the resource allocation information.
In this embodiment, a time domain offset of the predetermined time frequency resource location with respect to the time frequency resource location on the primary cell indicated by the resource allocation information is determined according to the offset indication, that is, the number of OFDM symbols (i.e., time difference) that are different between the time frequency resource location on the secondary cell for receiving the user data and the time frequency resource location on the primary cell indicated by the resource allocation information. The position of the time-frequency resource of the auxiliary cell for receiving the user data can be determined through the offset indication, so that the terminal can respectively receive the user data on the main cell and the auxiliary cell in the cell activation TTI, the data on the auxiliary cell does not need to be delayed to be received by the next TTI, and the time delay of data transmission is effectively reduced.
Fig. 7 is a flowchart illustrating a method for transmitting data in a secondary cell according to an embodiment of the present invention. Wherein, the method comprises the following steps:
The method for transmitting the data of the secondary cell provided by the invention considers that the data receiving problem exists in the current mode of activating the secondary cell based on DCI, namely, a terminal has certain time delay after receiving and processing the DCI activated by the cell and completing the activation of the secondary cell, if the same resource allocation information on the main cell is adopted on the secondary cell, the situation that the data needs to be received but the secondary cell is still not activated can occur, therefore, an offset indication is defined so that the terminal can receive the user data on the secondary cell according to the offset indication and the resource allocation information. Specifically, the base station configures an offset indication for the terminal and sends the offset indication to the terminal, where the offset indication is used to indicate a time domain offset of a position of a time-frequency resource (predetermined time-frequency resource) for sending user data by the secondary cell relative to a time-frequency resource position on the primary cell indicated by the resource allocation information, that is, a number of OFDM symbols (that is, a time difference) that are different between the time-frequency resource position for sending user data on the secondary cell and the time-frequency resource position on the primary cell indicated by the resource allocation information. Further, in the TTI in which the cell activation signaling is located, the user data is sent to the terminal by using the predetermined time-frequency resource of the secondary cell. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data transmission mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, and a notebook computer.
Fig. 8 is a flowchart illustrating a method for secondary cell data transmission according to another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, the base station correspondingly configures the offset indication for the terminal according to the processing capability (e.g., data processing capability) reported by the terminal, so that the offset indication is more targeted, and it is ensured that the terminal successfully receives the user data on the secondary cell in the current TTI.
Fig. 9 shows a flowchart of a method for secondary cell data transmission according to still another embodiment of the present invention. Wherein, the method comprises the following steps:
In this embodiment, the offset indication may be carried by downlink control information or higher layer signaling, which ensures that the terminal can effectively receive the offset indication.
In an embodiment of the third aspect of the present invention, an apparatus for secondary cell data transmission is provided, which is applied to a terminal, and fig. 10 shows a schematic diagram of an apparatus 100 for secondary cell data transmission according to an embodiment of the present invention. Wherein the apparatus 100 comprises:
a receiving module 102, configured to receive an offset indication sent by a base station, and receive resource allocation information sent by the base station on a primary cell in a transmission time interval where a cell activation signaling is located;
a location determining module 104, configured to determine, within a transmission time interval, a predetermined time-frequency resource location of the secondary cell according to the offset indication and the resource allocation information;
the receiving module 102 is further configured to receive user data sent by the base station at a predetermined time-frequency resource location.
In the apparatus 100 for transmitting data in a secondary cell provided by the present invention, considering that there is a data receiving problem in the current DCI-based secondary cell activation manner, that is, there is a certain time delay between the terminal receiving and processing DCI activated by the cell and the completion of the activation of the secondary cell, if the same resource allocation information on the primary cell is used in the secondary cell, a situation may occur that data needs to be received but the secondary cell is still not activated, so an offset indication is defined for the terminal to receive user data in the secondary cell according to the offset indication and the resource allocation information. Specifically, the terminal receives the offset indication sent by the base station, and receives the resource allocation information sent by the base station on the primary cell in the TTI in which the cell activation signaling is located. Further, the terminal determines a predetermined time-frequency resource position of the user data sent by the base station on the secondary cell according to the offset indication and the resource allocation information, and receives the user data on the predetermined time-frequency resource position. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data receiving mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
As shown in fig. 5, the base station sends resource allocation information on the primary cell, where the resource allocation information indicates that the time-frequency resource locations allocated to the terminal on the primary cell are from symbol 3 to symbol 4 in the time domain and from RB 2 to RB 4 in the frequency domain, the terminal receives an offset indication sent by the base station, and determines that a difference between the time-frequency resource location for receiving user data on the secondary cell and the time-frequency resource location on the primary cell indicated by the resource allocation information is three OFDM symbols (i.e., an instant domain offset is 3) according to the offset indication. The terminal receives data on the corresponding resources (time domain 6 to 7 symbols, frequency domain 2 to 4 RBs) on secondary cell 1 and secondary cell 2.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, and a notebook computer. The receiving module 102 may be a receiver or an antenna, etc., and the position determining module 104 may be a central processor or a baseband processor, etc.
In one embodiment of the present invention, preferably, the offset indicates a time domain offset for indicating a predetermined time frequency resource location relative to a time frequency resource location on the primary cell indicated by the resource allocation information.
In this embodiment, a time domain offset of the predetermined time frequency resource location with respect to the time frequency resource location on the primary cell indicated by the resource allocation information is determined according to the offset indication, that is, the number of OFDM symbols (i.e., time difference) that are different between the time frequency resource location on the secondary cell for receiving the user data and the time frequency resource location on the primary cell indicated by the resource allocation information. The position of the time-frequency resource of the auxiliary cell for receiving the user data can be determined through the offset indication, so that the terminal can respectively receive the user data on the main cell and the auxiliary cell in the cell activation TTI, the data on the auxiliary cell does not need to be postponed to be received by the next TTI, and the time delay of data transmission is effectively reduced.
In an embodiment of the present invention, preferably, the receiving module 102 is specifically configured to receive and demodulate downlink control information or higher layer signaling sent by a base station, and acquire the offset indication.
In this embodiment, the offset indication may be carried by downlink control information or higher layer signaling, which ensures that the terminal can effectively receive the offset indication.
In an embodiment of the fourth aspect of the present invention, an apparatus for secondary cell data transmission is provided, which is applied to a station, and fig. 11 shows a schematic diagram of an apparatus 110 for secondary cell data transmission according to an embodiment of the present invention. Wherein the apparatus 110 comprises:
a configuration module 112, configured to configure an offset indication for the terminal;
a sending module 114, configured to send the offset indication to the terminal; and in the transmission time interval of the cell activation signaling, sending user data to the terminal by using the preset time-frequency resource of the auxiliary cell, wherein the time domain offset of the position of the preset time-frequency resource relative to the time-frequency resource position on the main cell indicated by the resource allocation information is determined by the offset indication.
In the device 110 for transmitting data in the secondary cell according to the present invention, considering that there is a data receiving problem in the current DCI-based secondary cell activation manner, that is, there is a certain time delay between the terminal receiving and processing the DCI activated by the cell and the activation of the secondary cell, if the same resource allocation information on the primary cell is used in the secondary cell, a situation may occur that the data needs to be received but the secondary cell is still not activated, so an offset indication is defined for the terminal to receive user data in the secondary cell according to the offset indication and the resource allocation information. Specifically, the base station configures an offset indication for the terminal and sends the offset indication to the terminal, where the offset indication is used to indicate a time domain offset of a position of a time-frequency resource (predetermined time-frequency resource) for sending user data by the secondary cell relative to a time-frequency resource position on the primary cell indicated by the resource allocation information, that is, a number of OFDM symbols (that is, a time difference) that are different between the time-frequency resource position for sending user data on the secondary cell and the time-frequency resource position on the primary cell indicated by the resource allocation information. Further, in the TTI in which the cell activation signaling is located, the user data is sent to the terminal by using the predetermined time-frequency resource of the secondary cell. In the CA scene of using DCI to activate the auxiliary cell, the technical scheme of the invention can optimize the data transmission mode in the CA scene, so that the terminal can successfully utilize the auxiliary cell to receive data in the current TTI, the CA technology can play a better role in URLLC service transmission, the URLLC data transmission performance is improved, and the data transmission delay in the CA scene is reduced.
In a specific embodiment, the terminal may be a network device such as a smart phone, a tablet computer, and a notebook computer. The configuration module 112 may be a central processor or a base station controller, etc., and the sending module 114 may be a transmitter or an antenna, etc.
In an embodiment of the present invention, preferably, the configuring module 112 is specifically configured to configure the offset indication for the terminal according to a processing capability of the terminal.
In this embodiment, the base station correspondingly configures the offset indication for the terminal according to the processing capability (e.g., data processing capability) reported by the terminal, so that the offset indication is more targeted, and it is ensured that the terminal successfully receives the user data on the secondary cell in the current TTI.
In an embodiment of the present invention, preferably, the sending module 114 is specifically configured to utilize the downlink control information or the higher layer signaling bearer offset indication, and send the downlink control information or the higher layer signaling to the terminal.
In this embodiment, the offset indication may be carried by downlink control information or higher layer signaling, which ensures that the terminal can effectively receive the offset indication.
The main technical steps of the specific embodiment of the data transmission method for the secondary cell comprise:
(1) and the base station configures a secondary cell data time domain offset instruction for the terminal, wherein the time domain offset instruction is used for indicating the time domain offset of the resource distributed by the base station on the secondary cell for the terminal relative to the resource distributed on the main cell, and the base station sends the time domain offset instruction to the terminal.
(2) And transmitting data to the terminal by using the auxiliary cell in the TTI where the cell activation signaling is positioned, wherein the time domain offset of the time frequency resource position of the transmitted data in the auxiliary cell relative to the time frequency resource position on the main cell is determined according to the time domain offset indication.
(3) The terminal receives a time domain offset indication (the time domain offset indication is carried by downlink control information or a high-level signaling) sent by the base station, and receives resource allocation information sent on a main cell in a TTI where a cell activation signaling is located.
(4) And the terminal receives user data sent by the base station end in the secondary cell in the TTI in which the cell activation signaling is located according to the time domain offset indication and the resource allocation information (as shown in fig. 5, the time domain offset is 3 symbols).
The technical scheme of the invention is that the problem of data receiving in the current mode of activating the auxiliary cell based on DCI is considered, namely, a terminal has a certain time delay after receiving and processing the DCI activated by the cell and after the activation of the auxiliary cell, if the same resource allocation information on the main cell is adopted on the auxiliary cell, the data is possibly received but the auxiliary cell is still not activated, so that the data transmitted on the auxiliary cell has a time domain offset relative to the main cell, and the time domain offset can be configured according to the terminal processing capability reported by the terminal, so that the terminal can respectively receive user data on the main cell and the auxiliary cell in the TTI activated by the cell, and the data on the auxiliary cell is not required to be delayed to be transmitted to the next TTI, thereby effectively reducing the time delay of data transmission.
An embodiment of a fifth aspect of the present invention provides a communication device, including the apparatus for secondary cell data transmission in any of the above embodiments; or the apparatus for secondary cell data transmission of any of the above embodiments.
The communication device provided by the present invention includes the apparatus for transmitting data in a secondary cell according to any of the foregoing embodiments, or the apparatus for transmitting data in a secondary cell according to any of the foregoing embodiments, and can achieve all the advantageous technical effects of the apparatus for transmitting data in a secondary cell according to any of the foregoing embodiments, or the apparatus for transmitting data in a secondary cell according to any of the foregoing embodiments.
In the description herein, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance unless explicitly stated or limited otherwise; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (13)
1. A method for data transmission in a secondary cell, applied to a terminal, the method comprising:
receiving an offset indication sent by a base station, and receiving resource allocation information sent by the base station on a main cell in a transmission time interval in which a cell activation signaling is located;
and in the transmission time interval, determining a preset time-frequency resource position of the auxiliary cell according to the offset indication and the resource allocation information, and receiving user data sent by the base station at the preset time-frequency resource position.
2. The method for secondary cell data transmission of claim 1,
the offset indication is used to indicate a time domain offset of the predetermined time frequency resource location relative to a time frequency resource location on the primary cell indicated by the resource allocation information.
3. The method according to claim 1 or 2, wherein the receiving the offset indication sent by the base station specifically includes:
and receiving and demodulating the downlink control information or the high-level signaling sent by the base station to acquire the offset indication.
4. A method for data transmission of a secondary cell, applied to a base station, the method comprising:
configuring an offset indication for a terminal and sending the offset indication to the terminal;
and in the transmission time interval of the cell activation signaling, sending user data to the terminal by using a preset time-frequency resource of the auxiliary cell, wherein the time domain offset of the position of the preset time-frequency resource relative to the time-frequency resource position on the main cell indicated by the resource allocation information is determined by the offset indication.
5. The method according to claim 4, wherein the configuring the offset indication for the terminal specifically includes:
and configuring the offset indication for the terminal according to the processing capacity of the terminal.
6. The method according to claim 4 or 5, wherein the sending the offset indication to the terminal specifically includes:
and utilizing downlink control information or a high-level signaling to bear the offset indication, and sending the downlink control information or the high-level signaling to the terminal.
7. An apparatus for data transmission in a secondary cell, the apparatus being applied to a terminal, the apparatus comprising:
a receiving module, configured to receive an offset indication sent by a base station, and receive resource allocation information sent by the base station on a primary cell within a transmission time interval in which a cell activation signaling is located;
a position determining module, configured to determine, within the transmission time interval, a predetermined time-frequency resource position of the secondary cell according to the offset indication and the resource allocation information;
the receiving module is further configured to receive, at the predetermined time-frequency resource location, user data sent by the base station.
8. The apparatus for secondary cell data transmission of claim 7,
the offset indication is used to indicate a time domain offset of the predetermined time frequency resource location relative to a time frequency resource location on the primary cell indicated by the resource allocation information.
9. The apparatus for secondary-cell data transmission according to claim 7 or 8,
the receiving module is specifically configured to receive and demodulate the downlink control information or the high-level signaling sent by the base station, and acquire the offset indication.
10. An apparatus for secondary cell data transmission, applied to a base station, the apparatus comprising:
a configuration module for configuring an offset indication for a terminal;
a sending module, configured to send the offset indication to the terminal; and in the transmission time interval of the cell activation signaling, sending user data to the terminal by using a preset time-frequency resource of the auxiliary cell, wherein the time domain offset of the position of the preset time-frequency resource relative to the time-frequency resource position on the main cell indicated by the resource allocation information is determined by the offset indication.
11. The apparatus for secondary cell data transmission of claim 10,
the configuration module is specifically configured to configure the offset indication for the terminal according to the processing capability of the terminal.
12. The apparatus for secondary-cell data transmission of claim 10 or 11,
the sending module is specifically configured to utilize downlink control information or a high-level signaling to carry the offset indication, and send the downlink control information or the high-level signaling to the terminal.
13. A communication device, comprising:
the apparatus for secondary cell data transmission according to any of claims 7 to 9; or
The apparatus for secondary cell data transmission according to any of claims 10 to 12.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106031073A (en) * | 2015-01-30 | 2016-10-12 | 华为技术有限公司 | Data transmission method, user equipment, transmission equipment and system |
| CN106209293A (en) * | 2010-09-28 | 2016-12-07 | Lg电子株式会社 | Inter-Cell Interference Coordination in wireless communication system |
| WO2018045678A1 (en) * | 2016-09-09 | 2018-03-15 | 宇龙计算机通信科技(深圳)有限公司 | Communication method and communication apparatus |
| CN108023666A (en) * | 2016-11-03 | 2018-05-11 | 华为技术有限公司 | The method and apparatus of wireless communication |
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| US9167451B2 (en) * | 2013-01-02 | 2015-10-20 | Lg Electronics Inc. | Method and apparatus for measuring interference in wireless communication system |
| US9955370B2 (en) * | 2013-01-11 | 2018-04-24 | Lg Electronics Inc. | Method and apparatus for controlling interference in wireless communication system |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106209293A (en) * | 2010-09-28 | 2016-12-07 | Lg电子株式会社 | Inter-Cell Interference Coordination in wireless communication system |
| CN106031073A (en) * | 2015-01-30 | 2016-10-12 | 华为技术有限公司 | Data transmission method, user equipment, transmission equipment and system |
| WO2018045678A1 (en) * | 2016-09-09 | 2018-03-15 | 宇龙计算机通信科技(深圳)有限公司 | Communication method and communication apparatus |
| CN108023666A (en) * | 2016-11-03 | 2018-05-11 | 华为技术有限公司 | The method and apparatus of wireless communication |
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